久久99精品国产99久久6尤,国产成人精品综合网站,18国产精品白浆在线观看免费,久久成人无码视频,日本欧美不卡一区二区三区在线,欧美又黄又粗又爽免费看,欧美视频一区二区,免费人妻精品一区二区三区四区,狠狠色狠狠色综合网,97色伦图片7778久久

  • <strike id="i6ace"><input id="i6ace"></input></strike><fieldset id="i6ace"></fieldset>
  • <ul id="i6ace"><dfn id="i6ace"></dfn></ul>
  • <del id="i6ace"><dfn id="i6ace"></dfn></del>

     
    Location:Home >>Product >>Intermediate

    Methyltriphenylphosphonium bromide

    Update time:2021/11/02 09:05:11  ???View:  
    Triphenylmethylphosphonium bromide
    Alias: triphenylmethylphosphonium bromide, bromomethane triphenylphosphonium salt, methyltriphenylphosphonium bromide, triphenylmethylphosphonium bromide
    CAS: 1779-49-3
    Molecular formula: C19H18PBr

    Main content ≥99%
    Packing: 25KG cardboard drum
    Properties: white powdery solid
    Uses: used in organic synthesis; use Wittig reagents, used in the preparation of alkenes, to increase the carbon number of unsaturated carbon chains. The ylide precursor of the Wittig reaction is widely used in the synthesis of unsaturated bonds in liquid crystal materials; it is a good cationic phase transition catalyst; it is widely used in the methylene reaction by using the Wittig reaction and widely used in Chemicalbook; Wittig Alkylene salt, after ring-closing metathesis, is used to synthesize an enyne that can provide a benzoazepine heterocyclic system; Wittig olefinic salt, recently used to synthesize enynes, through ring-closing metathesis to generate a benzazepine ring system . It is widely used in methylene through Wittig reaction.
    ------分隔線----------------------------

    Service Hotline:

    You only need a phone call, we will serve you attentively

    Consult now
    Copyright © Shandong Zhengji Chemical Co., Ltd.  All Rights Reserved   Case Number :魯ICP備20007847號-4 chemBlink Premium Supplier
    人人妻人人澡人人爽曰本| 久久99精品久久久久久水蜜桃| 无码精品在线观看| 日本熟妇人妻xxxxx| 少妇人妻精品一区二区三区99| 在线你懂 亚洲| 亚洲网站色| 五月桃花网婷婷亚洲综合| 永久免费av无码网站国产| 国产成人精品一区二区三区免费| 亚洲国产第一区| 久久av高潮av无码av| av午夜久久蜜桃传媒软件 | 人妻无码αv中文字幕久久琪琪布 国产精品久久久久久亚洲影视 | 少妇脱了内裤让我添| www国产亚洲精品久久网站| 女人与zzzooooxxxx| free性中国老太hd| 四虎永久在线精品免费AV| 欧美成人影院在线观看| 久久久久久久精品无码AV少妇| 激情毛片无码专区| 特级小箩利无码毛片| 免费 黄 色 人成 视频 在 线| 99久久免费国产精精品| 无码一区二区三区免费| 亚洲av永久无码精品国产精品| 色一情一乱一伦一视频免费看| 色偷偷人人澡人人爽人人模| 中文字幕人成乱码熟女| 在线观看片免费人成视频播放| 另类内射国产在线| 日本午夜小视频| 日韩欧美在线视频一区二区| 国产午夜亚洲精品不卡在线观看| gogogo高清在线观看免费| 国模大胆一区二区三区| 无码AV波多野结衣久久| 人妻少妇AV中文字幕乱码| 国产精品无码av片在线观看播| 人妻少妇精品久久久久久|